Helcionelloida
Sign in to savethumb|Yochelcionella cyrano thumb|Pelagiella atlantoides Helcionelloida is an extinct group of ancient molluscs (phylum Mollusca). These are the oldest known conchiferan molluscs, that is, they had a mineralised shell. Some members of this class were mistaken for Monoplacophorans. The class was erected by Peel in 1991.
In the Vinony graph
Within Vinony's link graph, Helcionelloida is referenced by 69 other articles, and connects out to Yochelcionella, Mollusca and Gastropoda.
It sits within the topics Conchifera, Helcionelloida and Mollusc classes.
Its subject is documented across 13 Wikipedia language editions.
Wikidata facts
- Parent taxon
- Conchifera
- Image
- Helcionellid NT.jpg
Show 3 more facts
- taxon name
- Helcionelloida
- taxon rank
- class
- Commons category
- Helcionelloida
Sources (1)
via Wikidata · CC0
~2 min read
Encyclopedic overview
5 sectionsContents
- Anatomy
- 2005 taxonomy
- 2006-2007 taxonomy
- References
- External links
thumb|Yochelcionella cyrano thumb|Pelagiella atlantoides Helcionelloida is an extinct group of ancient molluscs (phylum Mollusca). These are the oldest known conchiferan molluscs, that is, they had a mineralised shell. Some members of this class were mistaken for Monoplacophorans. The class was erected by Peel in 1991.
==Anatomy==
Excerpted from Wikipedia’s “Helcionelloida” article, available under the CC BY-SA 4.0 licence.